Precalculus Examples

$f (x) = 5^{- 2}$

Step 1

Rewrite the expression using the negative exponent rule $b^{- n} = \frac{1}{b^{n}}$ .

$f (x) = \frac{1}{5^{2}}$

Step 2

Raise $5$ to the power of $2$ .

$f (x) = \frac{1}{25}$